KDA 3.3-100-3-D00-W1 Bosch Rexroth Indramat
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MPN: R911267797
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The Bosch Rexroth Indramat KDA 3.3-100-3-D00-W1 is a spindle drive from the KDA Spindle Drives series, featuring a rated current of 100 Amps and a DC supply voltage of 300 VDC. It uses forced cooling via a mounted heatsink blower and operates in ambient temperatures from 5 to 45 degrees Celsius. The drive accepts digital speed command values and supports installation at elevations up to 1000 meters above sea level.
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Product Description:
The KDA 3.3-100-3-D00-W1 is a drive module produced by Bosch Rexroth Indramat for the KDA Spindle Drives series. It acts as the power stage between the machine controller and a spindle motor, delivering regulated three-phase output derived from a common DC bus. Within automated milling, drilling, or grinding equipment, the unit provides rapid speed changes and precise torque control so that the spindle can follow programmed feed rates and thread-cutting sequences. Such regulation supports repeatable surface finishes and tool life in industrial automation.
The heat sink blower that removes switching losses is powered by 220 V/50–60 Hz auxiliary power. Air is forced across the finned cooler by this dedicated fan, which is described as a mounted heat sink blower. The drive uses forced cooling, so a continuous airstream is required to avoid derating. Power for the inverter stage is drawn from a shared DC link at 300 VDC; this voltage is rectified upstream from the plant mains and stabilized by the supply module. Under nominal conditions, the current drawn from that bus may reach 100 A, enabling heavy-duty acceleration of large spindle masses without clipping the commanded torque curve.
The electronic components are specified to operate between 5 to 45 °C, so enclosure air conditioning is required when the cabinet exceeds that range. Installation is permitted up to 1000 m above sea level; beyond this height, the thinner air reduces convective cooling and additional measures are necessary. Spindle speed is issued as a digital 16-bit parallel word, allowing the CNC to program precise rpm steps without analog drift. The controller board has no additional interface option, and it also omits a second-channel encoder input, so all feedback and auxiliary functions must be handled by the primary command path.
Frequently Asked Questions about KDA 3.3-100-3-D00-W1:
Q: What is the rated current for the KDA 3.3-100-3-D00-W1 spindle drive?
A: The KDA 3.3-100-3-D00-W1 spindle drive operates with a rated current of 100 A.
Q: Which cooling method is utilized in the KDA 3.3-100-3-D00-W1 spindle drive?
A: This spindle drive uses a forced cooling system that relies on a mounted heatsink blower.
Q: What is the maximum permitted installation elevation for the KDA 3.3-100-3-D00-W1?
A: The KDA 3.3-100-3-D00-W1 can be installed at elevations up to 1000 meters above sea level.
Q: What DC supply voltage is required by the KDA 3.3-100-3-D00-W1 spindle drive?
A: This model accepts a DC supply voltage of 300 VDC.
Q: What type of speed command input does the KDA 3.3-100-3-D00-W1 support?
A: The speed command value for this model uses a digital 16-bit parallel interface.
